LTC3829EUHF#PBF

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Analog Devices

3-PHASE, SINGLE OUTPUT SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER WITH DIFFAMP

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LTC3829EUHF#PBF

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Analog Devices

3-PHASE, SINGLE OUTPUT SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER WITH DIFFAMP

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DocumentsR526 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3829EUHF#PBF

Clock Sync	False
Control Features	Power Good, Soft Start, Tracking, Frequency Control, Enable, Current Limit
Duty Cycle (Max) [Max]	94 %
Frequency - Switching [Max]	770 kHz
Frequency - Switching [Min]	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	3
Output Type	Transistor Driver
Package / Case	38-WFQFN Exposed Pad
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	38 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

LTC3829 Series

3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp

Part	Output Configuration	Output Phases	Duty Cycle (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Control Features	Number of Outputs	Output Type	Package / Case	Function	Mounting Type	Supplier Device Package
Analog Devices LTC3829EUHF#PBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-WFQFN Exposed Pad	Step-Down	Surface Mount
Analog Devices LTC3829IUHF#PBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-WFQFN Exposed Pad	Step-Down	Surface Mount
Analog Devices LTC3829EUHF#TRPBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-WFQFN Exposed Pad	Step-Down	Surface Mount
Analog Devices LTC3829EFE#PBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-TFSOP	Step-Down	Surface Mount	38-TSSOP-EP
Analog Devices LTC3829IFE#WTRPBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-TFSOP	Step-Down	Surface Mount	38-TSSOP-EP
Analog Devices LTC3829IFE#TRPBF	Positive	3	94 %	-40 °C	125 ¯C	Buck	38 V	4.5 V	770 kHz	250 kHz	Current Limit Enable Frequency Control Power Good Soft Start Tracking	3	Transistor Driver	38-TFSOP	Step-Down	Surface Mount	38-TSSOP-EP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 10.36
		10	$ 7.29
		25	$ 6.50
		100	$ 5.62
		250	$ 5.55

Description

General part information

LTC3829 Series

The LTC3829 is a high performance 3-phase single output synchronous step-down DC/DC switching controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise due to ESR of the input capacitors are minimized by operating the three controller output stages out of phase.The LTC3829 can be configured for 6-phase operation, has DCR temperature compensation, and output foldback current limiting. This device features a precision 0.6V reference and a power good indicator.Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode operation. A differential amplifier provides true remote sensing of the output voltage at the point of load.The LTC3829 is available in both low profile 38-pin 5mm × 7mm QFN and Exposed Pad FE packages.ApplicationsNotebook and Palmtop ComputersTelecom SystemsDC Power Distribution Systems